f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers/*
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers * ***** BEGIN LICENSE BLOCK *****
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers * Version: MPL 1.1/GPL 2.0/LGPL 2.1
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers *
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers * The contents of this file are subject to the Mozilla Public License Version
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers * 1.1 (the "License"); you may not use this file except in compliance with
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers * the License. You may obtain a copy of the License at
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers * http://www.mozilla.org/MPL/
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers *
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers * Software distributed under the License is distributed on an "AS IS" basis,
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers * for the specific language governing rights and limitations under the
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers * License.
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers *
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers * The Original Code is the elliptic curve math library.
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers *
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers * The Initial Developer of the Original Code is
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers * Sun Microsystems, Inc.
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers * Portions created by the Initial Developer are Copyright (C) 2003
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers * the Initial Developer. All Rights Reserved.
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers *
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers * Contributor(s):
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers * Douglas Stebila <douglas@stebila.ca>, Sun Microsystems Laboratories
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers *
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers * Alternatively, the contents of this file may be used under the terms of
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers * either the GNU General Public License Version 2 or later (the "GPL"), or
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers * in which case the provisions of the GPL or the LGPL are applicable instead
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers * of those above. If you wish to allow use of your version of this file only
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers * under the terms of either the GPL or the LGPL, and not to allow others to
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers * use your version of this file under the terms of the MPL, indicate your
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers * decision by deleting the provisions above and replace them with the notice
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers * and other provisions required by the GPL or the LGPL. If you do not delete
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers * the provisions above, a recipient may use your version of this file under
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers * the terms of any one of the MPL, the GPL or the LGPL.
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers *
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers * ***** END LICENSE BLOCK ***** */
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers/*
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers * Use is subject to license terms.
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers *
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers * Sun elects to use this software under the MPL license.
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers */
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers#pragma ident "%Z%%M% %I% %E% SMI"
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers#include "ecl.h"
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers#include "ecl-curve.h"
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers#include "ecl-priv.h"
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers#ifndef _KERNEL
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers#include <stdlib.h>
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers#include <string.h>
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers#endif
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers#define CHECK(func) if ((func) == NULL) { res = 0; goto CLEANUP; }
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers/* Duplicates an ECCurveParams */
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowersECCurveParams *
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowersECCurveParams_dup(const ECCurveParams * params, int kmflag)
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers{
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers int res = 1;
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers ECCurveParams *ret = NULL;
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers#ifdef _KERNEL
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers ret = (ECCurveParams *) kmem_zalloc(sizeof(ECCurveParams), kmflag);
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers#else
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers CHECK(ret = (ECCurveParams *) calloc(1, sizeof(ECCurveParams)));
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers#endif
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers if (params->text != NULL) {
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers#ifdef _KERNEL
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers ret->text = kmem_alloc(strlen(params->text) + 1, kmflag);
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers bcopy(params->text, ret->text, strlen(params->text) + 1);
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers#else
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers CHECK(ret->text = strdup(params->text));
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers#endif
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers }
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers ret->field = params->field;
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers ret->size = params->size;
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers if (params->irr != NULL) {
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers#ifdef _KERNEL
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers ret->irr = kmem_alloc(strlen(params->irr) + 1, kmflag);
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers bcopy(params->irr, ret->irr, strlen(params->irr) + 1);
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers#else
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers CHECK(ret->irr = strdup(params->irr));
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers#endif
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers }
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers if (params->curvea != NULL) {
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers#ifdef _KERNEL
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers ret->curvea = kmem_alloc(strlen(params->curvea) + 1, kmflag);
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers bcopy(params->curvea, ret->curvea, strlen(params->curvea) + 1);
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers#else
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers CHECK(ret->curvea = strdup(params->curvea));
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers#endif
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers }
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers if (params->curveb != NULL) {
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers#ifdef _KERNEL
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers ret->curveb = kmem_alloc(strlen(params->curveb) + 1, kmflag);
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers bcopy(params->curveb, ret->curveb, strlen(params->curveb) + 1);
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers#else
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers CHECK(ret->curveb = strdup(params->curveb));
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers#endif
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers }
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers if (params->genx != NULL) {
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers#ifdef _KERNEL
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers ret->genx = kmem_alloc(strlen(params->genx) + 1, kmflag);
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers bcopy(params->genx, ret->genx, strlen(params->genx) + 1);
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers#else
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers CHECK(ret->genx = strdup(params->genx));
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers#endif
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers }
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers if (params->geny != NULL) {
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers#ifdef _KERNEL
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers ret->geny = kmem_alloc(strlen(params->geny) + 1, kmflag);
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers bcopy(params->geny, ret->geny, strlen(params->geny) + 1);
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers#else
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers CHECK(ret->geny = strdup(params->geny));
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers#endif
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers }
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers if (params->order != NULL) {
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers#ifdef _KERNEL
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers ret->order = kmem_alloc(strlen(params->order) + 1, kmflag);
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers bcopy(params->order, ret->order, strlen(params->order) + 1);
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers#else
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers CHECK(ret->order = strdup(params->order));
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers#endif
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers }
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers ret->cofactor = params->cofactor;
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers CLEANUP:
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers if (res != 1) {
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers EC_FreeCurveParams(ret);
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers return NULL;
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers }
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers return ret;
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers}
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers#undef CHECK
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers/* Construct ECCurveParams from an ECCurveName */
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowersECCurveParams *
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowersEC_GetNamedCurveParams(const ECCurveName name, int kmflag)
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers{
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers if ((name <= ECCurve_noName) || (ECCurve_pastLastCurve <= name) ||
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers (ecCurve_map[name] == NULL)) {
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers return NULL;
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers } else {
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers return ECCurveParams_dup(ecCurve_map[name], kmflag);
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers }
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers}
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers/* Free the memory allocated (if any) to an ECCurveParams object. */
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowersvoid
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowersEC_FreeCurveParams(ECCurveParams * params)
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers{
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers if (params == NULL)
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers return;
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers if (params->text != NULL)
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers#ifdef _KERNEL
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers kmem_free(params->text, strlen(params->text) + 1);
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers#else
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers free(params->text);
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers#endif
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers if (params->irr != NULL)
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers#ifdef _KERNEL
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers kmem_free(params->irr, strlen(params->irr) + 1);
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers#else
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers free(params->irr);
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers#endif
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers if (params->curvea != NULL)
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers#ifdef _KERNEL
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers kmem_free(params->curvea, strlen(params->curvea) + 1);
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers#else
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers free(params->curvea);
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers#endif
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers if (params->curveb != NULL)
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers#ifdef _KERNEL
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers kmem_free(params->curveb, strlen(params->curveb) + 1);
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers#else
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers free(params->curveb);
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers#endif
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers if (params->genx != NULL)
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers#ifdef _KERNEL
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers kmem_free(params->genx, strlen(params->genx) + 1);
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers#else
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers free(params->genx);
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers#endif
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers if (params->geny != NULL)
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers#ifdef _KERNEL
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers kmem_free(params->geny, strlen(params->geny) + 1);
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers#else
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers free(params->geny);
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers#endif
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers if (params->order != NULL)
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers#ifdef _KERNEL
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers kmem_free(params->order, strlen(params->order) + 1);
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers#else
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers free(params->order);
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers#endif
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers#ifdef _KERNEL
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers kmem_free(params, sizeof(ECCurveParams));
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers#else
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers free(params);
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers#endif
f9fbec18f5b458b560ecf45d3db8e8bd56bf6942mcpowers}